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https://github.com/alsa-project/alsa-lib.git
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Updated to latest API
This commit is contained in:
Jaroslav Kysela
parent
cd97f4e735
commit
8ab0681082
1 changed files with 82 additions and 66 deletions
148
test/timer.c
148
test/timer.c
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@ -1,50 +1,57 @@
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/time.h>
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#include "../include/asoundlib.h"
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void show_status(void *handle)
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{
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int err;
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snd_timer_status_t status;
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snd_timer_status_t *status;
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if ((err = snd_timer_status(handle, &status)) < 0) {
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snd_timer_status_alloca(&status);
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if ((err = snd_timer_status(handle, status)) < 0) {
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fprintf(stderr, "timer status %i (%s)\n", err, snd_strerror(err));
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return;
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}
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printf("STATUS:\n");
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printf(" resolution = %lu\n", status.resolution);
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printf(" lost = %lu\n", status.lost);
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printf(" overrun = %lu\n", status.overrun);
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printf(" queue = %i\n", status.queue);
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printf(" resolution = %li\n", snd_timer_status_get_resolution(status));
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printf(" lost = %li\n", snd_timer_status_get_lost(status));
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printf(" overrun = %li\n", snd_timer_status_get_overrun(status));
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printf(" queue = %li\n", snd_timer_status_get_queue(status));
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}
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void read_loop(void *handle, int master_ticks, int timeout)
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{
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int err, max;
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fd_set in;
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struct timeval tv;
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int count, err;
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struct pollfd *fds;
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snd_timer_read_t tr;
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count = snd_timer_poll_descriptors_count(handle);
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fds = calloc(count, sizeof(struct pollfd));
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if (fds == NULL) {
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fprintf(stderr, "malloc error\n");
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exit(EXIT_FAILURE);
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}
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while (master_ticks-- > 0) {
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FD_ZERO(&in);
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max = snd_timer_poll_descriptor(handle);
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FD_SET(max, &in);
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tv.tv_sec = timeout;
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tv.tv_usec = 0;
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if ((err = select(max + 1, &in, NULL, NULL, &tv)) < 0) {
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fprintf(stderr, "select error %i (%s)\n", err, strerror(err));
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exit(0);
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if ((err = snd_timer_poll_descriptors(handle, fds, count)) < 0) {
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fprintf(stderr, "snd_timer_poll_descriptors error: %s\n", snd_strerror(err));
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exit(EXIT_FAILURE);
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}
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if ((err = poll(fds, count, timeout)) < 0) {
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fprintf(stderr, "poll error %i (%s)\n", err, strerror(err));
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exit(EXIT_FAILURE);
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}
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if (err == 0) {
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fprintf(stderr, "timer time out!!\n");
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exit(0);
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exit(EXIT_FAILURE);
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}
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while (snd_timer_read(handle, &tr, sizeof(tr)) == sizeof(tr)) {
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printf("TIMER: resolution = %lu, ticks = %lu\n",
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printf("TIMER: resolution = %u, ticks = %u\n",
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tr.resolution, tr.ticks);
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}
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}
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free(fds);
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}
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int main(int argc, char *argv[])
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@ -57,16 +64,21 @@ int main(int argc, char *argv[])
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int subdevice = 0;
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int list = 0;
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snd_timer_t *handle;
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snd_timer_select_t sel;
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snd_timer_info_t info;
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snd_timer_params_t params;
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snd_timer_id_t *id;
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snd_timer_info_t *info;
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snd_timer_params_t *params;
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char timername[64];
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snd_timer_id_alloca(&id);
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snd_timer_info_alloca(&info);
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snd_timer_params_alloca(¶ms);
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idx = 1;
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while (idx < argc) {
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if (!strncmp(argv[idx], "class=", 5)) {
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class = atoi(argv[idx]+5);
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class = atoi(argv[idx]+6);
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} else if (!strncmp(argv[idx], "sclass=", 6)) {
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sclass = atoi(argv[idx]+6);
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sclass = atoi(argv[idx]+7);
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} else if (!strncmp(argv[idx], "card=", 5)) {
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card = atoi(argv[idx]+5);
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} else if (!strncmp(argv[idx], "device=", 7)) {
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@ -80,66 +92,70 @@ int main(int argc, char *argv[])
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}
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if (class == SND_TIMER_CLASS_SLAVE && sclass == SND_TIMER_SCLASS_NONE) {
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fprintf(stderr, "slave class is not set\n");
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exit(0);
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}
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if ((err = snd_timer_open(&handle))<0) {
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fprintf(stderr, "timer open %i (%s)\n", err, snd_strerror(err));
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exit(0);
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exit(EXIT_FAILURE);
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}
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if (list) {
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bzero(&sel.id, sizeof(sel.id));
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sel.id.class = -1;
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snd_timer_query_t *qhandle;
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if ((err = snd_timer_query_open(&qhandle, "hw", 0)) < 0) {
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fprintf(stderr, "snd_timer_query_open error: %s\n", snd_strerror(err));
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exit(EXIT_FAILURE);
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}
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snd_timer_id_set_class(id, SND_TIMER_CLASS_NONE);
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while (1) {
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if ((err = snd_timer_next_device(handle, &sel.id)) < 0) {
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if ((err = snd_timer_query_next_device(qhandle, id)) < 0) {
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fprintf(stderr, "timer next device error: %s\n", snd_strerror(err));
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break;
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}
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if (sel.id.class < 0)
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if (snd_timer_id_get_class(id) < 0)
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break;
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printf("Timer device: class %i, sclass %i, card %i, device %i, subdevice %i\n",
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sel.id.class, sel.id.sclass, sel.id.card, sel.id.device, sel.id.subdevice);
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snd_timer_id_get_class(id),
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snd_timer_id_get_sclass(id),
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snd_timer_id_get_card(id),
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snd_timer_id_get_device(id),
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snd_timer_id_get_subdevice(id));
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}
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snd_timer_query_close(qhandle);
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exit(EXIT_SUCCESS);
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}
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sprintf(timername, "hw:CLASS=%i,SCLASS=%i,CARD=%i,DEV=%i,SUBDEV=%i", class, sclass, card, device, subdevice);
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if ((err = snd_timer_open(&handle, timername, SND_TIMER_OPEN_NONBLOCK))<0) {
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fprintf(stderr, "timer open %i (%s)\n", err, snd_strerror(err));
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exit(EXIT_FAILURE);
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}
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printf("Using timer class %i, slave class %i, card %i, device %i, subdevice %i\n", class, sclass, card, device, subdevice);
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bzero(&sel, sizeof(sel));
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sel.id.class = class;
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sel.id.sclass = sclass;
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sel.id.card = card;
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sel.id.device = device;
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sel.id.subdevice = subdevice;
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if ((err = snd_timer_select(handle, &sel)) < 0) {
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fprintf(stderr, "timer select %i (%s)\n", err, snd_strerror(err));
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if ((err = snd_timer_info(handle, info)) < 0) {
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fprintf(stderr, "timer info %i (%s)\n", err, snd_strerror(err));
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exit(0);
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}
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if (class != SND_TIMER_CLASS_SLAVE) {
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if ((err = snd_timer_info(handle, &info)) < 0) {
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fprintf(stderr, "timer info %i (%s)\n", err, snd_strerror(err));
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exit(0);
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}
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printf("Timer info:\n");
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printf(" flags = 0x%x\n", info.flags);
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printf(" id = '%s'\n", info.id);
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printf(" name = '%s'\n", info.name);
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printf(" max ticks = %lu\n", info.ticks);
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printf(" average resolution = %lu\n", info.resolution);
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bzero(¶ms, sizeof(params));
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params.flags = SND_TIMER_PSFLG_AUTO;
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params.ticks = (1000000000 / info.resolution) / 50; /* 50Hz */
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if (params.ticks < 1)
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params.ticks = 1;
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printf("Using %lu tick(s)\n", params.ticks);
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if ((err = snd_timer_params(handle, ¶ms)) < 0) {
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fprintf(stderr, "timer params %i (%s)\n", err, snd_strerror(err));
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exit(0);
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}
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printf("Timer info:\n");
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printf(" slave = %s\n", snd_timer_info_is_slave(info) ? "yes" : "no");
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printf(" card = %i\n", snd_timer_info_get_card(info));
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printf(" id = '%s'\n", snd_timer_info_get_id(info));
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printf(" name = '%s'\n", snd_timer_info_get_name(info));
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printf(" max ticks = %li\n", snd_timer_info_get_ticks(info));
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printf(" average resolution = %li\n", snd_timer_info_get_resolution(info));
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snd_timer_params_set_auto_start(params, 1);
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if (!snd_timer_info_is_slave(info)) {
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snd_timer_params_set_ticks(params, (1000000000 / snd_timer_info_get_resolution(info)) / 50); /* 50Hz */
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if (snd_timer_params_get_ticks(params) < 1)
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snd_timer_params_set_ticks(params, 1);
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printf("Using %li tick(s)\n", snd_timer_params_get_ticks(params));
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} else {
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snd_timer_params_set_ticks(params, 1);
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}
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if ((err = snd_timer_params(handle, params)) < 0) {
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fprintf(stderr, "timer params %i (%s)\n", err, snd_strerror(err));
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exit(0);
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}
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show_status(handle);
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if ((err = snd_timer_start(handle)) < 0) {
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fprintf(stderr, "timer start %i (%s)\n", err, snd_strerror(err));
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exit(0);
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exit(EXIT_FAILURE);
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}
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read_loop(handle, 25, class == SND_TIMER_CLASS_SLAVE ? 10000 : 1);
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read_loop(handle, 25, snd_timer_info_is_slave(info) ? 10000 : 25);
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show_status(handle);
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snd_timer_close(handle);
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return 0;
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printf("Done\n");
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return EXIT_SUCCESS;
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}
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